Force Equilibria Between Charged Surfaces with Confined Polyelectrolyte Chains
The forces in a system composed of two charged (membrane) surfaces are studied, effected by the addition of an infinitely long, flexible polymeric chain carrying charges of the sign opposite to the sign of the fixed surface charges. The conformation of the polymeric chain as a function of the intermembrane separation clearly displays the onset of the unbinding transition of the polymer analogous to the one observed in a system of deformable, fluid membranes. This transition couples with the usual double layer forces in such a way that the total intermembrane force can become attractive.
KeywordsTotal Free Energy Hartree Equation DLVO Theory Flexible Polymeric Chain Polyelectrolyte Chain
Unable to display preview. Download preview PDF.
- 1.J.N. Israelachvili, Intermolecular and Surface Forces (Academic Press New York, 1985) and references therein.Google Scholar
- 2.S. Leibler, R. Lipowsky, Phys. Rev. B35, 7004 (1987).Google Scholar
- 4.F.W. Wiegel, J.Phys. A10, 290, (1977).Google Scholar
- 5.J.K.J. Opheusden, J.Phys. A21, 2739, (1988).; R. Israëls, J.M.H.M. Scheutjens (personal communication); Åkesson, C. Woodward, B. Jönsson, J.Chem.Phys. 91, 2461, (1989).Google Scholar